Composition for constructing roads or pavements.



" 106. COMPOSITIONS,

COATING R PLASTIC:

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Parana. OFFICE.

-'WILLIAM T. HEADLEY, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO HEADLEY 'GOOD ROADS COMPANY, OF WILMINGTON, DELAWARE, A CORPORATION OF DELA- WARE.

COMPOSITION FOR CONSTBUCTING ROADS OB PAVEMENTS.

No Drawing.

T 0 all whom it may concern:

Be it known that I, WILLIAM T. HEADLEY, a citizen of the United States, residing at the city of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in a Composition for Constructing Roads or Pavements, of which the following is a specification.

The principal object of my present invention, is to provide an efiicient compcsi tion for use in the constructing of a road or pavement, which practically is dustless and having the peculiar qualities of asphaltum or bituminous bonded macadam roads, the strength of concrete, and inexpensive and convenientto construct; and further a pavement or road practically most satisfactory as to wearing qualities owing to its solidity or stability and dustless conditions under variable influences of use.

To which ends, my invention consists first of an asphaltic cement for use in the constructing o'f a pavement or road embracing with intermingled aggregated mineral materials, PortLand cement an'a'sand or'fin'e stone and the "said' eemeamnd water employed in a cold state or condition and under pressure the mass formed into a solid or stable smooth surfaced road or pavement.

In carrying my invention into effect, the following method will give excellent results:-F0ur parts of crushed stone or other mineral aggregate tiat W1 pass through mes es ranging from 1/2 to 2" or other convenient sizes. The stone or other intermingled mineral materials are subjected to a bath or sprinkling with a solution composed 2/3 of bicomac. an as )halt cement repared as hereinafter staf ll'and I73 water and thoroughly mixed either by hand or machinery, until the particles of mineral matter are coated with said cement. After the stone or mineral matter has undergone the said treatment, one part of slow setting Portland cement and two parts if. sand mixe toge ier rylare added to t e s one or mineral aggregate,--that has been previously coated with the diluted cement, in order that the sand and cement may adhere to the aggregate mineral mass, and if re quired, additions of the cement diluted to a greater extent may be added to thin down the conglomerated mass until presenting a Specification of Letters Patent.

Patented Nov. 26, 1912.

Application filed October 22, 1910. Serial No. 588,525.

condition most nearly corresponding to ordinary cement concrete, as commonly used. 'hen the conglomerate mass has been prepared as explained, it is placed upon a suitable foundation, in desired thickness, and rolled then to set so as to become thoroughly consolidated. This is readily ascertained by any excess fluid rising to the surface of the formed structure together with any excess sand and cement failing to cling or lodge to become a part of the aggregated setting mass and fill voids therebetween, will also rise to the surface, whereby under rolling action a perfectly rigid, solid and smooth top surface will be given to the finished pavement or road.

A pavement or road prepared in the manner explained and constructed as described, must be protected against travel for a few hours, in order that travel thereafterwill not rut it or water be absorbed thereby. After rolling has been completed and the fluid rising to the top has drained off, aslight coating of sand or screenings may be thrown over the surface to protect the same until the mass has become thoroughly set or the road rigid.

The important elementary feature of my invention is the use of the asphaltic cement used in conjunction with the aggregated mineral materials, water, Portland or other cement, and sand or fine stone screenings, in the formation of the above defined road or pavement. This asphaltic cement, consists of asphalt, liquid or solid, natural or artificial, crude or refined, fluxed when necessary, with an as il. The composition is mixe hot to produce an em l agahaltm of the proper ciaracter, and'bbns'is 'efidy for use. A good working formula has been found to be to take of the composition of s halt and as ltic ilalnd mix -or combine wi e same 0 T ese ingre mm s assis mg 1n sapon'i cadition, with aggregated mineral materials, cement and sand alone or with fine stone or screenings. One of the chief advantages o cottonseed oil caustic otash and water.-

tion and disintegration and also in hastenwater, into a highly desirable workable conof constructing a avement or road in such manner is that the amalgamated mass is workable in substantially the same manner as ordinary Portland cement concrete is workable ractically, in the applied arts. Then by the use of the amalgamated mass, in a cold state, the pavement or road can be very expeditiously and inexpensively constructed and finished, because a roller is the only necessary piece of machinery required to be employed to practically complete such a road structure without regard to what the reason is or what may be the weather conditions. The amal amated mass so treated is applied to the onndation in such a manner as that it sets up and fills voids with solid materials making throughout a decidedly rigid, stable or solid pavement or road with hi hly desirable smooth surface conditions. ne of the principal oints of advantage of my said invention, is that the asphaltic cement can be supplied cold and when mixed with the necessary sand, stone and cement, also in a cold state, necessary repairs thereby can be expeditiously and economically effected.

Having thus described the nature and objects of my invention, what I claim as new and desire to secure by Letters Patent 1s:-

1. An improved wearing surface product for roads or pavements, composed of an emulsified cement about two parts, water about one part, slow setting ortland cement about one part and dry sand or fine stone screenings about bined together and adapted to be applied to and over a mineral aggregate to coat and impregnate the same, substantially as and for the purposes described.

2. An improved wearing surface product, which consists of an emulsified asphaltic cement about two parts, water about one part, slow setting Portland cement about one part and dry sand or fine stone screenings about two parts, all combined together, and said product adapted to be mixed with a mineral aggregate to coat and impregnate the same and the said coated and impregnated mineral aggregate adapted to be applied to a foundation, whereby under compression is derived a smooth, compact and stable wearing surface of a road or pavement, substantially as described.

In witness whereof, I have hereunto set my signature in the presence of two subscribing witnesses.

WILLIAM T. HEADLEY.

Witnesses:

J. WALTER Doncnass, THOMAS M. SMITH.

copies of patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

two parts, all com 

